# US 5,702,159 A · Cushion body structure of a car seat

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- Number: US 5,702,159 A
- Document ID: US5702159A
- Status: Granted
- Kind: A
- Application number: 08/446,596
- Filed: 1995-06-09
- Granted: 1997-12-30
- Earliest claimed: 1993-09-19
- Inventors: Chikara Matsuoka; Takeshi Watadani; Kunihisa Wakimoto; Yukihiro Kinoshita
- Web page: https://patentgrep.com/patent/US5702159A

## CPC

- B29C 44/086: {and feeding more material into the enlarged cavity}
- A47C 7/18: having foamed material included in cushioning part
- B29C 44/16: shaped by the expansion of the material
- B60N 2/58: Seat coverings
- B60N 2/5875: {by adhesion, e.g. gluing}
- B60N 2/7017: {characterised by the manufacturing process; manufacturing upholstery or upholstery springs not otherwise provided for}
- Y10S 297/01: Foam
- Y10S 297/02: Molded
- B29C: SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING (making preforms B29B11/00; making laminated products by combining previously unconnected layers which become one product whose layers will remain together B32B37/00 - B32B41/00)
- A47C: CHAIRS; SOFAS; BEDS
- B60N: SEATS SPECIALLY ADAPTED FOR VEHICLES; VEHICLE PASSENGER ACCOMMODATION NOT OTHERWISE PROVIDED FOR
- Y10S: TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS

## Abstract

A cushion body (10) for forming a car seat, which facilitates attachment of a skin material (15) to a cushion material (11). The cushion body (10) is made by attaching a planar fastening body (12) in a cushion material molding die (20) and unifying with the cushion material (11) along a three-dimensional curved surface shape of an interior surface of the die by an internal foamed molding pressure of the cushion material (11). The planar fastening body (12) is made of a planar fastening material (13) connecting with a supporting material (14) which is basically the same composition as the cushion material (11).

## Claims

### Claim 1

A vehicular seat cushion comprising, a cushioning material having a seating surface with a center portion and rising side portions to either side of said center portion, said center portion of said seating surface having a three-dimensional curved surface, a fastener body having an under surface affixed to said center portion of said seating surface and an upper surface duplicating said three-dimensional curved surface of said center portion of said seating surface, said upper surface of said fastener body having a plurality of fasteners disposed thereon, and a surface material covering said cushioning material and attached to said plurality of fasteners, whereby said surface material assumes said three-dimensional curved surface of said seating surface.

### Claim 2 (depends on 1)

A vehicular seat cushion according to claim 1, wherein said surface material has a suture at substantially the juncture between said rising side portions of said seating surface and said fastener body.

### Claim 3 (depends on 1)

A vehicular seat cushion according to claim 1, wherein said fastener body comprises a urethane foam slab and a fastener material fixed thereon.

### Claim 4 (depends on 3)

A vehicular seat cushion according to claim 3, wherein said urethane foam slab and said fastener material are fixed to each other by lamination.

### Claim 5 (depends on 1)

A vehicular seat cushion according to claim 1, wherein said fastener body includes a foam slab layer affixed to said center portion of said seating surface and a fastener material on said upper surface carrying said plurality of fasteners.

### Claim 6 (depends on 5)

A vehicular seat cushion according to claim 5, wherein said center portion of said seating surface is a foam which is attached to said foam slab by expansion molding.

### Claim 7 (depends on 5)

A vehicular seat cushion according to claim 5, wherein said fastener material is laminated to said foam slab layer.

### Claim 8 (depends on 5)

A vehicular seat cushion according to claim 5, wherein a gap is formed between said rising side portions of said seating surface and said fastener body in which a suture is positioned.